I have not been able to definitively find Benjamin H Dewey's parents or ancestors. He is one of my "brick walls". The earliest record I have of Benjamin is when he married Melinda Adams Nestle on 8 Sep 1863. One of Benjamin's son's was named Lewis Benjamin Dewey which could be a hint that Benjamin is descended from Lewis Cass Dewey. Have you had your DNA analyzed? I have on AncestryDNA. However, I have not had any matches on the Dewey line yet. I have had some matches on Melinda Adams Nestle Dewey thru her first husband, Samuel Nestle but none thru Benjamin and Melinda's children. I have run across Betsy Dewey's name somewhere but I could not tie her to Benjamin.